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Detecting Subtle Vibrations Using Graphene-Based Cellular Elastomers
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DOI：10.1021/acsami.7b01207.png)
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Abstract
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Ultralight graphene elastomer-based flexible sensors are developed to detect subtle vibrations within a broad frequency range. The same device can be employed as an accelerometer, tested within the experimental bandwidth of 20-300 Hz as well as a microphone, monitoring sound pressures from 300 to 20-000 Hz. The sensing element does not contain any metal parts, making them undetectable by external sources and can provide an acceleration sensitivity of 2.6 mV/g, which is higher than or comparable to those of rigid Si-based piezoresistive microelectromechanical systems (MEMS).
Keywords:
graphene elastomer
flexible sensors
vibration sensor
accelerometers
microphones
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